“RF Loss” is the topic of the latest (May 10) episode of the “ARRL The Doctor is In” podcast. Listen…and learn!
Sponsored by DX Engineering, “ARRL The Doctor is In” is an informative discussion of all things technical. Listen on your computer, tablet, or smartphone — whenever and wherever you like!
Every 2 weeks, your host, QST Editor-in-Chief Steve Ford, WB8IMY, and the Doctor himself, Joel Hallas, W1ZR, will discuss a broad range of technical topics. You can also e-mail your questions to doctor@arrl.org, and the Doctor may answer them in a future podcast.
Enjoy “ARRL The Doctor is In” on Apple iTunes, or by using your iPhone or iPad podcast app (just search for “ARRL The Doctor is In”). You can also listen online at Blubrry, or at Stitcher (free registration required, or browse the site as a guest) and through the free Stitcher app for iOS, Kindle, or Android devices. If you’ve never listened to a podcast before, download our beginner’s guide.
VHF
Dump the UV-5R and Get the GT-5R
“For years the Baofeng UV-5R has been maligned as non-compliant with FCC regulations and a real spreader of spurious emissions. Further, it woul... Read more
Like Father, Like Son: Michigan Ham Wraps Up Grid Master Award
Satellite enthusiast Doug Papay, KD8CAO, of Zeeland, Michigan, has worked all 488 US grid squares via satellite and has been granted Grid Master Award... Read more
RT97 Portable Repeater Power Amplifier UHF
RT97 Portable Repeater – Retevis Multi working power selection, working with the matching power adapter, and also can work under DC12V~24V power... Read more
ROIP-102 Radio Repeater or Radio Trunking SIP Gateway Full PTT control (IETF SIP V2)
What is a Cross-Network Gateway? It enables voice communications among the Radio, VoIP, and Public Announce (PA) networks. It incorporates Radio over... Read more
Kenwood TM-D710GA
Specifications Covers 144-148 and 430-450 MHz transmit with 118-524 MHz (Band A) 136-524 MHz and 800-1300 MHz (Band B) less cellular receive Dual rece... Read more
Low cost 10Ghz EME Rx System
1 – Low cost 10Ghz EME Rx – The LNBF 2 – Modifying the LNBF 3 – Tuning the LNBF 4 – Pictures and PlotsNOTE: This... Read more
Review
Geochron Digital 4k UHD Review
“This is the ultimate jewelry for your dream ham shack! The Geochron Digital 4k UHD gives viewers beautiful displays of the Earth with the sunri... Read more
ADALM PLUTO Frequency Expansion Modification Plus CPU Cores
“Here we take a look at the ADALM-PLUTO frequency expansion modification to give us 70 MHz through to 6GHz. Mine actually went as low as 46MHz!!... Read more
![Icom IC-705 Hands On Review, HF/VHF/UHF [ English ]](https://qrznow.com/wp-content/uploads/2020/07/icom-ic-705-stand-190x122.jpg)
Grounding, Bonding, Earthing, Shielding and Protecting with W6LG
Part 1 of 2. Jim recommends in detail how he believes grounding should be installed in the typical Ham Radio Statio Read more
Dipole Antenna Center Insulator – Ham Radio Basics by W6LG
Jim, W6LG shows the PVC plumbing parts, coax connector and screw eyes to make a dipole center insulator. Read more
Equipment
![Harbor Freight Solar Panel for Ham Radio [ Video ]](https://qrznow.com/wp-content/uploads/2016/05/8-2-13solar-006-190x122.jpg)
Harbor Freight Solar Panel for Ham Radio [ Video ]
As an easy introductory solar project I purchased Harbor Freight’s 45 watt solar kit for my ham radio use. Read more
Aerial-51 SKY-SDR
GENERAL TRANSCEIVER SPECIFICATIONS Technology Solid State SDR-DSP Direct Conversion Frequencies / Bands 1.8 MHz to 54.0 MHz 160, 80, 60, 40, 30, 20,... Read more
Ailunce HS1 HF SDR HAM Transceiver
Ailunce HS1 Specification: Frequency Range: 0.5-30MHz Operating Mode – SSB(J3E)，CW，AM(RX Only), FM, FREE-DV TX Power: Max to 15w Product Dimensi... Read more
ICOM IC-7851 – ALL THE DETAILS
Take the DXer to follow a weak signal, biggest enemy is the interference caused by strong signal of proximity frequency. This is an index is RMDR (Rec... Read more
New ICOM IC 7300 ( ENGLISH VERSION )
ICOM IC 7300 High Quality Real-Time Spectrum Scope RF Direct Sampling System Class Leading Phase Noise Characteristics Large Touch Screen Color TFT L... Read more
ARS-USB AZIMUTH by EA4TX
Antenna Rotator System is the most popular and universal engine management antenna rotator. With this new generation that includes a USB port,... Read more
App - Mobile
Koch Morse Trainer Pro – Android App
Take your morse code to the next level with Koch Morse Trainer Pro. The only trainer that supports prosigns (procedural signals) and non-english cha... Read more
![Architecture of Radio APP [ Video´s ]](https://qrznow.com/wp-content/uploads/2016/03/4-190x122.jpg)
Architecture of Radio APP [ Video´s ]
Architecture of Radio Architecture of Radio is a neat app, showing you what the world of radio “would” look like, if you could see in the... Read more
Pocket Radio Android App ( TX and RX )
This is an Android application used to remotely control several HAM radio – any CAT enabled transceiver over Bluetooth, USB/Serial or with secu... Read more
RFinder – The World Wide Repeater Directory now supports Twitter!
“RFinder has been the ‘Social Repeater Directory’ for a while now with its support of repeater check-in postings to APRS and... Read more
MagicSDR – A NEW ANDROID AND IOS RTL_TCP CLIENT
MagicSDR makes it possible to interactively explore RF spectrum using panadapter and waterfall visualization, demodulate and play AM, SSB, CW, NFM, WF... Read more
EchoLink App for IOS8
Description Please note: This app is for licensed Amateur Radio operators only. See www.echolink.org for more information. EchoLink for iOS provides a... Read more
